| /* |
| * Copyright (c) 2009 Atheros Communications Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <net/mac80211.h> |
| |
| #include "../ath.h" |
| #include "../debug.h" |
| |
| #include "hw.h" |
| #include "hw-ops.h" |
| |
| /* Common header for Atheros 802.11n base driver cores */ |
| |
| #define IEEE80211_WEP_NKID 4 |
| |
| #define WME_NUM_TID 16 |
| #define WME_BA_BMP_SIZE 64 |
| #define WME_MAX_BA WME_BA_BMP_SIZE |
| #define ATH_TID_MAX_BUFS (2 * WME_MAX_BA) |
| |
| #define WME_AC_BE 0 |
| #define WME_AC_BK 1 |
| #define WME_AC_VI 2 |
| #define WME_AC_VO 3 |
| #define WME_NUM_AC 4 |
| |
| #define ATH_RSSI_DUMMY_MARKER 0x127 |
| #define ATH_RSSI_LPF_LEN 10 |
| #define RSSI_LPF_THRESHOLD -20 |
| #define ATH_RSSI_EP_MULTIPLIER (1<<7) |
| #define ATH_EP_MUL(x, mul) ((x) * (mul)) |
| #define ATH_RSSI_IN(x) (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER)) |
| #define ATH_LPF_RSSI(x, y, len) \ |
| ((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y)) |
| #define ATH_RSSI_LPF(x, y) do { \ |
| if ((y) >= RSSI_LPF_THRESHOLD) \ |
| x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN); \ |
| } while (0) |
| #define ATH_EP_RND(x, mul) \ |
| ((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul)) |
| |
| struct ath_atx_ac { |
| int sched; |
| int qnum; |
| struct list_head list; |
| struct list_head tid_q; |
| }; |
| |
| struct ath_buf_state { |
| int bfs_nframes; |
| u16 bfs_al; |
| u16 bfs_frmlen; |
| int bfs_seqno; |
| int bfs_tidno; |
| int bfs_retries; |
| u8 bf_type; |
| u32 bfs_keyix; |
| enum ath9k_key_type bfs_keytype; |
| }; |
| |
| struct ath_buf { |
| struct list_head list; |
| struct ath_buf *bf_lastbf; /* last buf of this unit (a frame or |
| an aggregate) */ |
| struct ath_buf *bf_next; /* next subframe in the aggregate */ |
| struct sk_buff *bf_mpdu; /* enclosing frame structure */ |
| struct ath_desc *bf_desc; /* virtual addr of desc */ |
| dma_addr_t bf_daddr; /* physical addr of desc */ |
| dma_addr_t bf_buf_addr; /* physical addr of data buffer */ |
| bool bf_stale; |
| bool bf_isnullfunc; |
| bool bf_tx_aborted; |
| u16 bf_flags; |
| struct ath_buf_state bf_state; |
| dma_addr_t bf_dmacontext; |
| struct ath_wiphy *aphy; |
| }; |
| |
| struct ath_atx_tid { |
| struct list_head list; |
| struct list_head buf_q; |
| struct ath_node *an; |
| struct ath_atx_ac *ac; |
| struct ath_buf *tx_buf[ATH_TID_MAX_BUFS]; |
| u16 seq_start; |
| u16 seq_next; |
| u16 baw_size; |
| int tidno; |
| int baw_head; /* first un-acked tx buffer */ |
| int baw_tail; /* next unused tx buffer slot */ |
| int sched; |
| int paused; |
| u8 state; |
| }; |
| |
| struct ath_node { |
| struct ath_common *common; |
| struct ath_atx_tid tid[WME_NUM_TID]; |
| struct ath_atx_ac ac[WME_NUM_AC]; |
| u16 maxampdu; |
| u8 mpdudensity; |
| int last_rssi; |
| }; |
| |
| int ath9k_cmn_rx_skb_preprocess(struct ath_common *common, |
| struct ieee80211_hw *hw, |
| struct sk_buff *skb, |
| struct ath_rx_status *rx_stats, |
| struct ieee80211_rx_status *rx_status, |
| bool *decrypt_error); |
| |
| void ath9k_cmn_rx_skb_postprocess(struct ath_common *common, |
| struct sk_buff *skb, |
| struct ath_rx_status *rx_stats, |
| struct ieee80211_rx_status *rxs, |
| bool decrypt_error); |
| |
| int ath9k_cmn_padpos(__le16 frame_control); |
| int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb); |
| void ath9k_cmn_update_ichannel(struct ieee80211_hw *hw, |
| struct ath9k_channel *ichan); |
| struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw, |
| struct ath_hw *ah); |
| int ath9k_cmn_key_config(struct ath_common *common, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta, |
| struct ieee80211_key_conf *key); |
| void ath9k_cmn_key_delete(struct ath_common *common, |
| struct ieee80211_key_conf *key); |